EP 0961767 A1 19991208 - METHOD FOR OBTAINING HEXAMETHYLENE DIAMINE FROM MIXTURES CONTAINING HEXAMETHYLENE DIAMINE
Title (en)
METHOD FOR OBTAINING HEXAMETHYLENE DIAMINE FROM MIXTURES CONTAINING HEXAMETHYLENE DIAMINE
Title (de)
VERFAHREN ZUR GEWINNUNG VON HEXAMETHYLENDIAMIN AUS HEXAMETHYLENDIAMIN ENTHALTENDEN MISCHUNGEN
Title (fr)
PROCEDE DE PREPARATION DE DIAMINE D'HEXAMETHYLENE A PARTIR DE MELANGES CONTENANT DE LA DIAMINE D'HEXAMETHYLENE
Publication
Application
Priority
- DE 19704612 A 19970207
- EP 9800506 W 19980130
Abstract (en)
[origin: DE19704612A1] The invention relates to a method for obtaining hexamethylene diamine (I) from a mixture (II) containing (I) hexamethylene diamine, (III) hexamethylenimine, (IV) a compound selected from the group consisting of 2-aminomethyl cyclopentylamine and 1,2-diaminocyclohexane, (V) an imine, and (VI) adipodinitrile and 6-aminocaproic acid nitrile. According to said method, (a) a mixture (II) is subjected to distillation, yielding (a1) a low-boiling fraction which essentially contains (III), (a2) a medium-boiling fraction (VII) containing (I), (IV) and (V), and (a3) a high-boiling fraction containing (V) and (VI); (b) a mixture (VII) is subjected to distillation, yielding (b1) an overhead which essentially contains (IV) and (b2) a mixture (VIII) containing (I) and (V) as bottom residue; and (c) a mixture (VIII) is subjected to distillation, yielding (c1) (I) as overhead and (c2) a bottom residue which contains the essential part of (V).
IPC 1-7
IPC 8 full level
C07C 209/84 (2006.01); C07C 209/86 (2006.01); C07C 211/12 (2006.01)
CPC (source: EP KR US)
C07C 209/84 (2013.01 - EP KR US); Y10S 203/20 (2013.01 - EP US)
Citation (search report)
See references of WO 9834903A1
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
DE 19704612 A1 19980813; AR 011635 A1 20000830; AU 6618098 A 19980826; BR 9807166 A 20000125; BR 9807196 A 20000523; BR 9807196 B1 20090113; CA 2280889 A1 19980813; CA 2280889 C 20050719; CN 1227216 C 20051116; CN 1251568 A 20000426; DE 59803738 D1 20020516; EP 0961767 A1 19991208; EP 0961767 B1 20020410; ES 2175682 T3 20021116; ID 23371 A 20000420; JP 2001511166 A 20010807; KR 100527321 B1 20051109; KR 20000070891 A 20001125; MY 127867 A 20061229; TW 512139 B 20021201; US 6139693 A 20001031; WO 9834903 A1 19980813
DOCDB simple family (application)
DE 19704612 A 19970207; AR P980100509 A 19980205; AU 6618098 A 19980130; BR 9807166 A 19980130; BR 9807196 A 19980130; CA 2280889 A 19980130; CN 98803874 A 19980130; DE 59803738 T 19980130; EP 9800506 W 19980130; EP 98908025 A 19980130; ES 98908025 T 19980130; ID 990846 A 19980130; JP 53372798 A 19980130; KR 19997007156 A 19990807; MY PI9800479 A 19980206; TW 87101638 A 19980207; US 36707099 A 19990809